nas·ty 
(năstē)
(năstē)adj. nas·ti·er, nas·ti·est
1.
a. Disgusting or repellent: a nasty odor rising from the garbage can. See Synonyms at offensive.
b. Unpleasantly cold or wet: nasty weather.
c. Archaic Dirty; filthy.
2. Morally offensive or indecent: a nasty film.
3.
a. Unpleasant or annoying: a nasty habit.
b. Mean or spiteful: Stop being nasty to each other.
4. Painful or dangerous; grave: a nasty accident.
5. Exasperatingly difficult to solve or handle: a nasty puzzle; a nasty problem.
n. pl. nas·ties
One that is nasty: "It is the business of museums to present us with nasties as well as with fine things" (Country Life).
[Middle English nasti, filthy, possibly alteration of Old French nastre, bad, short for villenastre : vilein, bad; see VILLAIN + -astre, pejorative suff. (from Latin -aster).]
nasti·ly adv.
nasti·ness n.
- firstling
- firstly
- first mate
- first name
- First Nation
- First Nations
- first night
- first off
- first offender
- first off/thing
- first person
- first-person
- first quantum number
- first quarter moon
- first-rate
- first responder
- first run
- first-run
- first sergeant
- first strike
- first-strike
- first string
- first-string
- first thing
- first thing